Fuse for projectiles



@et 9, 1934. A. F. Tl-:lTscHElD FUSE FOR PROJECTILES Filed Dec. l, 1932 Patented Oct. 9, 1934 UNITED STATES'PATENT OFFICE 1 Claim. (Cl. IGZ-39.1)

(Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) The invention described herein may be manufactured and used by or for the Government for governmental purposes, Without the payment to me of any royalty thereon.

This invention relates to a fuse for projectiles.

The purpose of the invention is to provide a bore-safe fuse for non-rotatable projectiles such as are fired from trench mortars and are equipped with vanes to insure head-on impact.

The improvements of the fuse are directed to a novel means for holding a slidable member and to a nose arranged to carry a novel striker and having suiicient length to include a delay train.

To these and other ends, the invention consists in the construction, arrangement and combination of elements described hereinafter and pointed out in the claim forming a part of this speciflcation.

A practical embodiment of the invention is illustrated in the accompanying drawing, where- Fig. 1 is a longitudinal sectional View of the fuse showing the parts in unarmed position.

Fig. 2 is a similar View taken at right angles to Fig. 1 and Fig. 3 is a longitudinal sectional view of an alternate nose carrying a delay train.

The fuse comprises a body 5 adapted to be screwed into a prepared opening in a projectile. The front end of the body is provided with an opening for threadedly receiving the stem 6 of a nose 7 having an annular shoulder 8 seating on the rim 9 of the body.

The nose is formed with a passage having a plurality of counterbores, enlarging from rear to front. The inner end 10 of the passage is for transmitting the flash from a primer 11 placed in the rst counterbore 12. A plug 13 threaded in the second counterbore 14 retains the primer 40 and has an aperture 15 for guiding a iiring pin 16.

The ring pin 16 is carried by a cup-shaped striker 17 slidably mounted in the outer counterbore 18 and having a reduced stem 19 disposed in the counterbore 20.

The firing pin passes through an aperture 21 in the stem and has an enlarged head 16a seated on the iioor of the cup-shaped striker. It is retained by means of a plug 22 tting in the striker. A shear pin 23 passing through the nose 7, striker 50 17 and plug 22 holds the plug in the striker and maintains the striker in the unarmed position.

A slide 24 mounted for movement in a transverse passage 25 in the body carries a detonator 26. The slide has a at face 27 whereby it is adapted to be engaged and held against rotation charge 29.

The inner end of the slide is cut away as at 30 and a bolt 31 mounted at an angle to the slide 24 is received in the cut away portion 30 and serves to hold the slide in unarmed position against the action of a spring 32.

The bolt is held in the path of movement of the slide by means of a pin 33 inserted in an aperture 34 in the inner end of the bolt. The lower end of the pin is inserted in the recess 35 of a plug 36 and is held by means of a shear pin 37. The plug is threaded into a passage 38 opening into the cavity 39 provided for receiving the booster charge 29.

The plug 36 with its pin 7o: shown in Fig. 3.

The nose 7:1'r carries a primer 11a, a delay train 42 and a relay charge 43.

The fuse is in the unarmed position when the parts are arranged as shown in Figs. 1 and 2. Upon ring a projectile equipped with the fuse the pin 33 sets back into the recess 35 of the plug 36 shearing the pin 37. The bolt 31 being thereby released is ejected by its spring 39 after the projectile leaves the gun or mortar.

The

removal of the bolt releases the slide 24 which is moved by'its spring 32 to the opposite side of the passage 25 and is arrested with the detonator J 26 disposed axially of the fuse in line with the primer 11 and the booster charge confined in the thimble 28. On impact the striker 17 is driven inwardly, shearing the pin 23, and forcing the firing pin into the primer.

I claim:

In a fuse, a nose having a cavity in its forward end,

a cup-shaped striker mounted for movement in the cavity, a ring pin passing through the base of the striker and having an enlarged head disposed within the striker, a solid plug inserted in and filling the cup-shaped striker and engaging the head of the firing pin, and. a shear pin passing through the nose, striker and plug.

ALFRED F. TEITSCHEID. 

